Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm33b1899m&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SM33B-1899
Physics
[2736] Magnetospheric Physics / Magnetosphere/Ionosphere Interactions, [2740] Magnetospheric Physics / Magnetospheric Configuration And Dynamics, [2764] Magnetospheric Physics / Plasma Sheet
Scientific paper
We use data from the Cluster/CODIF instrument to analyze the O+/H+ density ratio in the magnetosphere. We present a new method that consists in mapping the observed density ratio along the magnetospheric magnetic field lines to produce statistical maps of nO+/nH+ at the magnetospheric equatorial plane. Using Cluster 3 and 4 data from 2001 to 2008 we construct maps for several energy intervals and for various geomagnetic conditions and solar wind activity levels. After a description of the technique and its limitations, we present preliminary results about the statistical spatial distribution of nO+/nH+ in the magnetosphere and its dependency on geomagnetic and solar wind activity. We compare them to previous results based on in-situ measurements inside the plasma sheet in order to assess the reliability of this mapping technique.
Kistler Lynn M.
Maggiolo Romain
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